Solution of inverse problems in electromagnetic NDE using finite element methods

Author

Yan, Mingye ; Udpa, Satish ; Mandayam, Shreekanth ; Sun, Yushi ; Sacks, Paul ; Lord, William

Author_Institution

Dept. of Electr. Eng. & Comput. Eng., Iowa State Univ., Ames, IA, USA

Volume

34

Issue

5

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

2924

Lastpage

2927

Abstract

This paper presents a technique for solving inverse problems in magnetostatic nondestructive evaluation (NDE), using finite element models. In-line inspection of ferromagnetic gas pipelines containing pipe-wall defects, is chosen as the candidate NDE process. The signal inversion technique consists of iteratively solving the forward problem by updating the finite element mesh, rather than the material properties of the finite elements. Preliminary simulation results obtained using a 2D finite element model are presented

Keywords

inspection; inverse problems; iterative methods; magnetostatics; mesh generation; nondestructive testing; electromagnetic NDE; ferromagnetic gas pipelines; finite element mesh; finite element methods; in-line inspection; inverse problems; iterative solution; magnetostatic nondestructive evaluation; pipe-wall defects; signal inversion technique; simulation results; Artificial neural networks; Finite element methods; Inspection; Inverse problems; Magnetic flux leakage; Magnetostatics; Permanent magnets; Permeability; Pipelines; Shape;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.717682

Filename

717682